<!--********************************************************************
* Copyright© 2000 - 2018 SuperMap Software Co.Ltd. All rights reserved.
*********************************************************************-->
<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title data-i18n="resources.title_landuseUnique"></title>
    <style type="text/css">
        body {
            margin: 0;
            overflow: hidden;
            background: #fff;
            width: 100%;
            height: 100%
        }

        #map {
            position: absolute;
            width: 100%;
            height: 100%;
            border: 1px solid #3473b7;
        }
        /*图例 style*/
        .legend {
            position: absolute;
            right: 50px;
            top: 300px;
            width: 250px;
            text-align: center;
            border: 2px solid #D6E3F1;
            background: #FFF;
            z-index: 9999999;
            display: none;
        }

        .legendTitle {
            background: #1E90FF;
        }

        .legendContent {
            padding-left: 15px;
            padding-right: 15px;
            height: 300px;
            display: block;
            overflow-y: auto;
        }

        .legendItemHeader {
            top: 5px;
            width: 100px;
            height: 18px;
            text-align: center;
        }

        .legendItemValue {
            top: 5px;
            width: 120px;
            text-align: center;
            height: 18px;
        }

        /*信息框 style*/
        #infoPlane {
            border: 2px solid #D6E3F1;
            position: absolute;
            right: 50px;
            top: 200px;
            width: 250px;
            z-index: 9999999;
            display: none;
        }

        .editPane {
            position: absolute;
            right: 60px;
            top: 50px;
            text-align: center;
            background: #FFF;
            z-index: 1000;
        }
    </style>
</head>
<body>

<div class='panel panel-primary editPane' id='editPane' style="z-index: 99999">
    <div class='panel-heading'>
        <h5 class='panel-title text-center' data-i18n="resources.title_landuseUnique"></h5>
    </div>
    <div class='panel-body' id='params'>
        <p></p>
        <div align='right' class='button-group'>
            <input type='button' id='btn1' class='btn btn-primary' data-i18n="[value]resources.btn_addThemeLayer" onclick="addThemeLayer()"/>
            <input type='button' id='btn2' class='btn btn-primary' data-i18n="[value]resources.text_input_value_clear" onclick="clearLayer()"/>
        </div>
    </div>
</div>

<div>
    <div id="map"></div>
    <div id="mapLegend" class="legend">
        <div class="legendTitle">
            <span data-i18n="resources.text_legend"></span>
        </div>
        <div class="legendContent">
            <table>
                <tr>
                    <td class="legendItemHeader" data-i18n="resources.text_landType"></td>
                    <td class="legendItemValue" data-i18n="resources.text_color"></td>
                </tr>
                <tr>
                    <td class="legendItemHeader" data-i18n="resources.text_grassland"></td>
                    <td class="legendItemValue" style="background: #C1FFC1"></td>
                </tr>
                <tr>
                    <td class="legendItemHeader" data-i18n="resources.text_city"></td>
                    <td class="legendItemValue" style="background: #CD7054"></td>
                </tr>
                <tr>
                    <td class="legendItemHeader" data-i18n="resources.text_shrub"></td>
                    <td class="legendItemValue" style="background: #7CCD7C"></td>
                </tr>
                <tr>
                    <td class="legendItemHeader" data-i18n="resources.text_dryLand"></td>
                    <td class="legendItemValue" style="background: #EE9A49"></td>
                </tr>
                <tr>
                    <td class="legendItemHeader" data-i18n="resources.text_lakeReservoir"></td>
                    <td class="legendItemValue" style="background: #8EE5EE"></td>
                </tr>
                <tr>
                    <td class="legendItemHeader" data-i18n="resources.text_economicForest"></td>
                    <td class="legendItemValue" style="background: #548B54"></td>
                </tr>
                <tr>
                    <td class="legendItemHeader" data-i18n="resources.text_desert"></td>
                    <td class="legendItemValue" style="background: #DEB887"></td>
                </tr>
                <tr>
                    <td class="legendItemHeader" data-i18n="resources.text_irrigatedLand"></td>
                    <td class="legendItemValue" style="background: #E0FFFF"></td>
                </tr>
                <tr>
                    <td class="legendItemHeader" data-i18n="resources.text_paddyField"></td>
                    <td class="legendItemValue" style="background: #388E8E"></td>
                </tr>
                <tr>
                    <td class="legendItemHeader" data-i18n="resources.text_timberForest"></td>
                    <td class="legendItemValue" style="background: #556B2F"></td>
                </tr>
                <tr>
                    <td class="legendItemHeader" data-i18n="resources.text_swamp"></td>
                    <td class="legendItemValue" style="background: #2F4F4F"></td>
                </tr>
                <tr>
                    <td class="legendItemHeader" data-i18n="resources.text_DefaultStyle"></td>
                    <td class="legendItemValue" style="background: #ABABAB"></td>
                </tr>
            </table>
        </div>
    </div>
    <div id="infoPlane">
        <div data-i18n="resources.text_attributeTable" style="text-align: center;background: #1E90FF"> </div>
        <div id="infoContent" style="overflow-y: auto; padding: 5px; background-color: #FFFFFF">
        </div>
    </div>
</div>

<script type="text/javascript" include="bootstrap,widgets.alert" src="../js/include-web.js"></script>
<script type="text/javascript" exclude="iclient-classic" src="../../dist/classic/include-classic.js"></script>
<script type="text/javascript">
    var host = window.isLocal ? window.server : "http://support.supermap.com.cn:8090",
        url1 = host + "/iserver/services/map-jingjin/rest/maps/京津地区地图",
        url2 = host + "/iserver/services/data-jingjin/rest/data";
    var map, layer, themeLayer;
    // 检测是否支持 Canvas
    if (!document.createElement('canvas').getContext) {
        widgets.alert.showAlert(resources.msg_supportCanvas, false);
    }

    map = new SuperMap.Map("map", {
        controls: [
            new SuperMap.Control.LayerSwitcher(),
            new SuperMap.Control.ScaleLine(),
            new SuperMap.Control.Zoom(),
            new SuperMap.Control.Navigation({
                dragPanOptions: {
                    enableKinetic: true
                }
            })]
    });
    layer = new SuperMap.Layer.TiledDynamicRESTLayer("Jingjin", url1, {
        transparent: true,
        cacheEnabled: true
    }, {maxResolution: "auto"});
    layer.events.on({"layerInitialized": addLayer});

    // 定义 Unique 单值专题图层
    themeLayer = new SuperMap.Layer.Unique("ThemeLayer");
    themeLayer.setOpacity(0.8);

    // 图层基础样式
    themeLayer.style = {
        shadowBlur: 3,
        shadowColor: "#000000",
        shadowOffsetX: 1,
        shadowOffsetY: 1,
        fillColor: "#FFFFFF"
    };

    // 开启 hover 高亮效果
    themeLayer.isHoverAble = true;

    // hover 高亮样式
    themeLayer.highlightStyle = {
        stroke: true,
        strokeWidth: 2,
        strokeColor: 'blue',
        fillColor: "#00F5FF",
        fillOpacity: 0.2
    };

    // 用于单值专题图的属性字段名称
    themeLayer.themeField = "LANDTYPE";
    // 风格数组，设定值对应的样式
    themeLayer.styleGroups = [
        {
            value: "草地",
            style: {
                fillColor: "#C1FFC1"
            }
        },
        {
            value: "城市",
            style: {
                fillColor: "#CD7054"
            }
        },
        {
            value: "灌丛",
            style: {
                fillColor: "#7CCD7C"
            }
        },
        {
            value: "旱地",
            style: {
                fillColor: "#EE9A49"
            }
        },
        {
            value: "湖泊水库",
            style: {
                fillColor: "#8EE5EE"
            }
        },
        {
            value: "经济林",
            style: {
                fillColor: "#548B54"
            }
        },
        {
            value: "沙漠",
            style: {
                fillColor: "#DEB887"
            }
        },
        {
            value: "水浇地",
            style: {
                fillColor: "#E0FFFF"
            }
        },
        {
            value: "水田",
            style: {
                fillColor: "#388E8E"
            }
        },
        {
            value: "用材林",
            style: {
                fillColor: "#556B2F"
            }
        },
        {
            value: "沼泽",
            style: {
                fillColor: "#2F4F4F"
            }
        },
        {
            value: "缺省风格",
            style: {
                fillColor: "#ABABAB"
            }
        }
    ]

    //专题图层 mousemove 事件
    themeLayer.on("mousemove", evn);

    function addLayer() {
        map.addLayers([layer, themeLayer]);
        map.setCenter(new SuperMap.LonLat(117.2, 40.11), 0);
    }

    //获取 feature 数据
    function addThemeLayer() {
        clearLayer();

        var getFeatureParam, getFeatureBySQLService, getFeatureBySQLParams;

        getFeatureParam = new SuperMap.REST.FilterParameter({
            name: "Jingjin",
            attributeFilter: "SMID > -1"
        });
        getFeatureBySQLParams = new SuperMap.REST.GetFeaturesBySQLParameters({
            queryParameter: getFeatureParam,
            toIndex: 500,
            datasetNames: ["Jingjin:Landuse_R"]
        });
        getFeatureBySQLService = new SuperMap.REST.GetFeaturesBySQLService(url2, {
            eventListeners: {"processCompleted": processCompleted, "processFailed": processFailed}
        });

        getFeatureBySQLService.processAsync(getFeatureBySQLParams);
    }
    function processCompleted(getFeaturesEventArgs) {
        var result = getFeaturesEventArgs.result;
        var feas = [];
        if (result && result.features) {
            var features = result.features;

            var IHFeas = []; //岛洞多面

            for (var i = 0, len = features.length; i < len; i++) {
                var feature = features[i];

                var smid = feature.attributes.SMID.toString();
                if (smid === "86" || smid === "87" || smid === "89") {
                    // islandHoleHandlerForFeature 处理岛洞面
                    IHFeas.push(islandHoleHandlerForFeature(feature));
                }
                else {
                    feas.push(feature);
                }
            }

            // 岛洞多面要素必需在其他要素之前添加
            feas = IHFeas.concat(feas);
            themeLayer.addFeatures(feas);
        }

        document.getElementById("mapLegend").style.display = "block";
    }
    function processFailed(e) {
        widgets.alert.showAlert(e.error.errorMsg,false);
    }
    function clearLayer() {
        document.getElementById("mapLegend").style.display = "none";
        document.getElementById("infoPlane").style.display = "none";
        //先清除上次的显示结果
        themeLayer.clear();
    }
    function evn(e) {
        if (e.target && e.target.refDataID) {
            document.getElementById("infoPlane").style.display = "block";
            var fid = e.target.refDataID;
            var fea = themeLayer.getFeatureById(fid);
            if (fea) {
                document.getElementById("infoContent").innerHTML = "";
                document.getElementById("infoContent").innerHTML += "ID: " + fea.attributes.SMID + "<br/>";
                document.getElementById("infoContent").innerHTML += resources.text_landType+": " + fea.attributes.LANDTYPE + "<br/>";
                document.getElementById("infoContent").innerHTML += resources.text_area + parseFloat(fea.attributes.SMAREA).toFixed(5) + "<br/>";
            }
        }
        else {
            document.getElementById("infoContent").innerHTML = "";
            document.getElementById("infoPlane").style.display = "none";
        }
    }
</script>
</body>
</html>

<script type="text/javascript">
    /*
     * Method: islandHoleHandlerForFeature。
     * 要素岛洞处理。
     *
     * 多面中，一个子面包含另一个子面，则被包含子面处理为岛洞。
     *
     * Parameters:
     * multiPolygon - {<SuperMap.Feature.Vector>} 需要进行岛洞处理的要素。
     *
     * Returns:
     * {<SuperMap.Feature.Vector>} 处理后的要素。
     */
    function islandHoleHandlerForFeature(feature) {
        if (feature.geometry instanceof SuperMap.Geometry.MultiPolygon && feature.geometry.components.length > 1) {
            var newGeometry = islandHoleHandlerForMultiPolygon(feature.geometry);
            feature.geometry = newGeometry;
        }
        return feature;

        /*
         * Method: islandHoleHandlerForMultiPolygon
         * 处理误判为岛洞的多面。
         *
         * iClient 在解析 iServer 数据时，默认将面要素处理为 MultiPolygon 类型，但有的面要素带有岛洞，
         * 这种情况下应该做特殊处理，本函数可以对一个多面进行岛洞处理，并返回新的多面。
         *
         * Parameters:
         * multiPolygon - {<SuperMap.Geometry.MultiPolygon>} 需要进行岛洞处理的多面。
         *
         * Returns:
         * {<SuperMap.Geometry.MultiPolygon>} 处理后的多面。
         */
        function islandHoleHandlerForMultiPolygon(multiPolygon) {
            if (multiPolygon instanceof SuperMap.Geometry.MultiPolygon && multiPolygon.components.length > 1) {
                var mPTmp = multiPolygon.clone();
                var componentsPolygons = mPTmp.components;

                //洞面关系数组
                var polygonHoleGroup = [];

                for (var k = 0, len = componentsPolygons.length; k < len; k++) {
                    var geoPolygon = componentsPolygons[k];

                    //不处理已经是岛洞的面
                    if (geoPolygon.components.length = 1) {
                        var lineRings = geoPolygon.components[0];

                        //将每个点放到面中进行判断
                        for (var j = 0, len1 = componentsPolygons.length; j < len1; j++) {
                            if (componentsPolygons[j].components.length != 1) continue;

                            if (j != k) {
                                var polygonGeoComp = componentsPolygons[j].components[0].components;

                                //假设此面为岛洞
                                var isAllPoiIn = true;

                                for (var i = 0, len2 = geoPolygon.components.length; i < len2; i++) {
                                    var point = lineRings.components[i];
                                    if (isPointInPoly(point, polygonGeoComp) == false) {
                                        isAllPoiIn = false;
                                        continue;
                                    }
                                }

                                //确定并记录洞面关系
                                if (isAllPoiIn == true) {
                                    var polygonHole = [j, k];
                                    polygonHoleGroup.push(polygonHole);
                                }

                            }
                        }
                    }
                    else {
                        continue;
                    }
                }

                // 根据洞面信息重构多面 Geometry。

                var bPsTmp = [];
                var hPsTmp = [];
                for (var m = 0, len3 = polygonHoleGroup.length; m < len3; m++) {
                    bPsTmp.push(polygonHoleGroup[m][0]);
                    hPsTmp.push(polygonHoleGroup[m][1]);
                }

                //岛洞基础面
                var bPs = delRepeatInArray(bPsTmp);
                //洞面
                var hPs = delRepeatInArray(hPsTmp);

                //独立面
                var iPs = [];
                //查找独立面
                for (var isIPs = 0, compLen = componentsPolygons.length; isIPs < compLen; isIPs++) {
                    var isNoHP = true;

                    for (var o = 0, len = bPs.length; o < len; o++) {
                        if (isIPs == bPs[o]) {
                            isNoHP = false;
                            break;
                        }
                    }

                    if (isNoHP == true) {
                        for (var o = 0, len = hPs.length; o < len; o++) {
                            if (isIPs == hPs[o]) {
                                isNoHP = false;
                                break;
                            }
                        }
                    }

                    if (isNoHP == true) {
                        iPs.push(isIPs);
                    }
                }

                //新洞面信息
                var hpInfo = [];

                //组织新geometry所需要的信息
                for (var o = 0, len4 = bPs.length; o < len4; o++) {
                    var ph = [];
                    ph.push(bPs[o]);
                    for (var m = 0, len3 = polygonHoleGroup.length; m < len3; m++) {
                        if (bPs[o] == polygonHoleGroup[m][0]) {
                            ph.push(polygonHoleGroup[m][1]);
                        }
                    }

                    if (ph.length > 1) {
                        hpInfo.push(ph);
                    }
                }


                var newComponents = [];
                //岛洞子面处理
                for (var m = 0, len3 = hpInfo.length; m < len3; m++) {
                    var geoP = hpInfo[m];
                    var newLineRings = [];
                    for (var n = 0, len6 = geoP.length; n < len6; n++) {
                        newLineRings.push(componentsPolygons[geoP[n]].components[0]);
                    }
                    var newGeoPolygon = new SuperMap.Geometry.Polygon(newLineRings);
                    newComponents.push(newGeoPolygon)
                }

                //独立子面处理
                for (var s = 0, len7 = iPs.length; s < len7; s++) {
                    var is = iPs[s];
                    newComponents.push(componentsPolygons[is])
                }

                multiPolygon.components = newComponents;
            }

            return multiPolygon;
        }

        /*
         * Method: delRepeatInArray
         * 删除数组中的重复元素。
         *
         * Parameters:
         * arr - {Array} 要进行重复元素删除的数组。
         *
         * Returns:
         * {Array} 无重复元素的数组。
         */
        function delRepeatInArray(arr) {
            var newArray = [];
            var provisionalTable = {};
            for (var i = 0, a; (a = arr[i]) != null; i++) {
                if (!provisionalTable[a]) {
                    newArray.push(a);
                    provisionalTable[a] = true;
                }
            }
            return newArray;
        }

        /*
         * Method: PointInPoly
         * 判断一个点是否在多边形里面。(射线法)
         *
         * Parameters:
         * pt - {Object} 需要判定的点对象，该对象含有属性x(横坐标)，属性y(纵坐标)。
         * poly - {Array(Objecy)}  多边形节点数组。例如一个四边形：[{"x":1,"y":1},{"x":3,"y":1},{"x":6,"y":4},{"x":2,"y":10},{"x":1,"y":1}]。
         *
         * Returns:
         * {Boolean} 点是否在多边形内。
         */
        function isPointInPoly(pt, poly) {
            for (var isIn = false, i = -1, l = poly.length, j = l - 1; ++i < l; j = i)
                ((poly[i].y <= pt.y && pt.y < poly[j].y) || (poly[j].y <= pt.y && pt.y < poly[i].y))
                && (pt.x < (poly[j].x - poly[i].x) * (pt.y - poly[i].y) / (poly[j].y - poly[i].y) + poly[i].x)
                && (isIn = !isIn);
            return isIn;
        }

        //辅助函数 -end
    }
</script>
